Cop winding machine



March 11, 1941. w. REINERS ETAL 2,234,356

- COP WINDING MACHINE Filed June 1, 1959 I s Sheets-Sheet 1 h W w March 11, 1941. w. RElNERS ETAL 2,234,356

COP WINDING MACHINE Fil'ed Jung 1, 1939 3 Sheets-Sheet 2 March 11, 1941.

w. REINERS' EI'AL COP WINDING MACHINE Filed June 1, 1939 5 Sheets-Sheet 3 Patented Mar. 11, 1941 UNITED STATES 2,234,356 cor wmnmc MACHINE Wilhelm Beiners,

Gladbaeh-Rheydt,

Gustav Kahllsch, Rheydt, and Stefan Fiirst, Gladbach- Bheydt, Germany,assignors to W. Schlai'horst & 00., Gladbach-Rheydt, Germany, a corporation of Germany Application June 1, 1939, Serial No. 276,780 In Germany July 28, 1938 1 Claim. (Cl. 242-21) This invention relates to a full automatic cop winding machine with separate spindles, that is a cop winding machine in which the winding operation progresses automatically and independently from cop to cop. In view of the high spindle speed of such machines and of the multiplicity of the controlling means it is advisable not to ac-' celerate unnecessarily the succession or changing over operations, In this connection it has already been proposed to make the duration of the individual changing over operations adjustable with respect to one another so that the cams controlling the changing over operations are made mutually rotatable.

The present invention also relates to this prob lem. It has been found that, as the speed of rotation of the spindles and that of the cam cylinder for the thread guide increase, the number' of finishing of! windings of the finished cop 20 increases unnecessarily, as a few windings are suflicient for guiding back the thread for the purpose of securing it at the base of the bobbin. Every additional winding is therefore unnecessary and in many instances may also mean a 25 regular loss in that, when preparing the cop for its subsequent use, the portion of the thread serving for finishing off is cut oil. It is evident that this is also the case when the thread is merely returned to the winding point so that it 30 is in the correct position for recommencing the winding operation,

According to the invention an additional controlling arrangement is provided which acts on an intermediate gear or if desired also on an addi- 35 tional spindle drive. Thus, during the thread return the speed is uniformly changed to such an extent that in every instance only a few windings are produced even if the speed is increased to any desired degree during the winding operation 40 proper. A

It has already been proposed, to allow the winding spindles to continue to run, by their inertia, for the purpose of back winding the thread,

but by this means too much yarn is used for back vertical. sectional views showing three different forms of winding units.

Each of the examples shows the invention applied to one of the different known or already previously proposed constructions of full auto- 5 matically operating winding units, so as to clearly illustrate that the inventive idea can be applied to any desired winding unit.

The known movements between thread guide and spindle for the production of the cop are 10 attained in the example illustrated in Fig. 1, which has a stationary cam cylinder 8 for the short traverse, by carrying out the other movements with the spindle 4, whereas in the example illustrated in Fig. 2 the spindle 4 carries out the short traverse for building the conical nose, while the thread guide 3| carries out the other movements; and finally in Fig. 3 all the movements are left to the thread guide 3 I.

In the construction according to Fig. 1 the winding spindle 4 is driven by the main driving shaft I through the intermediary of friction wheels 2, 3 and toothed wheels 5, S. The toothed wheel 5 and the friction wheel 3 are keyed on the shaft 1 of the cam cylinder 8. The thread F runs from the stationary thread guide 8 to the cam cylinder 8 so that it is guided by the groove in this cylinder from the point to'the base of the cone of the front end of the cop, whereas it reaches the point of the cop owing to the diagonal pull of the thread. The feed of the spindle l is effected in this example in progressive building motion of the spindle l, in this example, is derived from a'screw spindle 12 through a pawl ll pivotally mounted on a bearing arm 58, which is fixed upon a slidable shaft I 0. The screw spindle I2 is rotated by drive means not shown to feed the cop spindle progressively to the left, until, upon initiation of a changeover operation a rod I3 is drawn to the right by a lever, l4 actuated 40 by a rotary cam 11 on shaft IS. The rod II has fixed to it an actuatinglug l3a, provided with a pin l3b adapted to engage the downwardly extending arm of pawl l I, when the rod I3 is drawn to the right. The pawl is thereby rocked until its downwardly extending arm abuts upon a pin Ha rigidly projecting from a part of the bearing arm 58, at which time the tooth of the pawl is disengaged from the screw spindle l2. Further 'movement of the rod to the right carries the bearing arm 58 back to starting position, thereby moving the wound cop S with respect to the thread guide 8, so that the thread is wound upon the cop'in a rapid spiral. To enable the speed to be changed during the returning of the thread F,

2 4 ass-asso another cam i8 is keyed on the shaft l6 and disengages the friction wheel 3 from its connection with the friction wheel 2 through the intermediary of a lever system "-20. For driving the shaft 1 after the disengagement from the main drive a worm wheel II is keyed on the shaft i6 and imparts rotating movement to the shaft 23 through the intermediary of a worm 22, the shaft 23 being capable of rotating the shaft 1 through the intermediary of bevel wheels 24, 2 5, as soon as the two-armed lever 28 comes onto that portion of the cam 28 which has the smaller radius.

In the example illustrated'in Fig. 2, a known mechanism for the disengagement of the pawl H is used, which comprises lever system 32, 34 actuated by a cam 33 on the shaft i6. This mechanism at the same time returns the thread guide 3| into its initial position, and back-winds the thread over the cop. The changing over from the main drive to the auxiliary drive is efiected in this form' of construction by a cam 35 through the intermediary of a rod system 36, 31, in such a manner that the sleeve 38 having friction cones, one at each end, is pushed out of engagement with the toothed wheel 3 and into engagement with the toothed wheel 38 from the nose to the base of the cop, by the movement of the cop to the right in the manner just described, whose speed of rotation is determined by the gear wheels 40, ll.

In the third embodiment shownin Fig. 3 the lever system 32, 34 for the disengagement of the pawl ii and for the. return of the thread guide is constructed like another known construction.

The change over from the main drive to the auxiliary drive is eflected by the bell crank lever Bl, as soon as this bell crank lever is swung in counterclockwise direction by the cam 52 and thus acts on the lever system I3, 54. The irlction disc I has two friction faces and after disengagement from the friction disc 2 comes into contact with the friction disc II which is driven from a separate shaft 51 through the intermediary of a friction disc 58.

What we claim as our invention and desire to secure by Letters Patent of the United States is:

In a cop winding machine, a winding spindle device, a thread guide device, means formoving one of said devices progressively with respect to the other to build the length of the cop, means for restoring the progressively moved device to starting position to back-wind the thread on the cop, a main drive for said winding spindle device effective during the building of the cop, an auxils'rEr AN Ftms'r. 

